Graphing

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					Graphing
When to Graph Your Data
   When "a picture could tell billions of words"
   To impress people
       Dramatize a research finding
   Some people think visually
   To emphasize something that numbers can't
    communicate well
Scatter Plot - Raw Data
                    8

                    7
 Number of Errors



                    6

                    5

                    4

                    3

                    2

                    1

                    0
                        0   1   2     3    4    5      6   7   8
                                    Number of Drinks
     Histogram - Raw Data

                               8
         Number of Responses

                               7
                               6
                               5
                               4
                               3
                               2
                               1

                               0
                                   1   2      3     4      5      6   7
                                           Response Scale Value

Should not have gaps
Column Graph - Categorical
Independent Variable

              10
               9
               8
 Importance




               7
               6                                        Sex
               5                                        Drugs
               4                                        Rock-n-Roll
               3
               2
               1
               0
                   Psychology      Civil      Physics
                                Engineering
                                  Major
Line Graph - All Kinds of Data

                       100
                        90
 Number/Square Block




                        80
                        70
                        60
                                                                Air Boats
                        50
                                                                Rednecks
                        40
                        30
                        20
                        10
                         0
                             Melbourne   Palm Bay   Kissimmee
                                          City
Circle/Pie Graph - Category
Proportions


         12%
                     25%
   15%                     Psychology
                           Business
                           Communications
                           Science Education

               48%
      Errors
           3-D
           Color
           Busy
9                                                                   10

8                                                                   9

7                                                                   8

                                                                    7
6




                                                       Importance
                                                                    6                                          Sex
5
                                         Sex                        5                                          Drugs
                                         Drugs
4
                                         Rock-n-Roll                4                                          Rock-n-Roll
3                                                                   3

2                                                                   2

1                                                                   1

                                                                    0
0                                                                        Ps ychology      Civ il     Physics
    Psychology       Civil     Physics                                                 Engineering
                 Engineering
                                                                                        Major
Where Graphs Come From
   Data analysis programs
       SPSS (Statistical Package for the Social
        Sciences)
   Dedicated graphing software
       DeltaGraph
   Spreadsheets
   Graphing utilities in other programs
       Word, PowerPoint
       Called “chart”
Not all Figures are Graphs
   Charts
       Communicate concepts pictorially
       Organizational chart
       Process chart (next slide)
   Drawing
   Photographs
Chart
             Parts
                                                                                            Chart Area
                                                   Plot Area
         Y (Value) axis                                                Data series


                                        100
                                         90                                                Symbol
                  Number/Square Block




 Value
 Axis                                    80
 Title                                   70                                                Line
                                         60
                                                                                              Air Boats
                                         50      Y axis scale
                                                                                              Rednecks
                                         40
                                         30
                                         20
                                                                       Tick Mark
                                         10
                                          0
                                              Melbourne     Palm Bay      Kissimmee                 Legend

                                                                City
                                                                                           X (Category) axis
Tick Mark Label/ Categ Label                                            Categ Axis Title

				
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posted:8/19/2012
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